7 research outputs found

    Distribution of elms (Ulmus spp.) in Polish forests according to the forestry inventory data

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    Elm resources in Poland were analysed on the basis of latest forestry inventory data (updated in 2012). As compared with the 1970s, a remarkable increase was noticed in the total area of forest stands dominated by elms. However, the contribution of elms to the total forest area in Poland is still small (17 653.67 ha, i.e. 0.24% of the total forest area), while forest stands dominated by them cover only 1011.84 hectares (0.01%). Elm forests are the most frequent at alluvial sites, but majority of elm trees is scattered in lowlands, mostly at the fertile potential sites of oak−hornbeam forest. Elms do not prefer any part of Poland, but their contribution is markedly lower in forests of the Sudety Mountains

    Changes in the area covered by woody plants communities in the Karpnicki Potok valley as an example of changes in forest area in lower parts of the Sudety Mountains

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    On the basis of historical and recent cadastral maps, topographic maps, and aerial photographs, we analysed changes in forest area within the cadastral units of Karpniki village, in the Karpnicki Potok (SW Poland). In 1823−2012, forest area increased there from about 41% to over 57% of the total area. The greatest increase has been recorded recently. Moreover, at that time over 16% of land classified officially as farmland was naturally colonized by communities dominated by woody plants. This seminatural process in the analysed case does not pose any serious threat to natural resources, but a complete lack of its control may lead to deterioration of the value of the local landscape and development of low−quality forest stands. The observed changes seem to be typical of other areas located in lower parts of the Sudety Mountains
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